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Carrier transport properties in the vicinity of single seld-assembled quantum dots determined by low-voltage cathodoluminescence imaging

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Academic year: 2021

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Figure 1 shows the schematic of the experiment. A low- low-voltage electron beam generates excess carriers in the barrier layer just below the surface of the QD structure
Figure 2 shows a CL image of such an array of InAs/InP QDs obtained at 1 kV, 300 K, and for I b = 3 nA
FIG. 4. Temperature dependence of carrier diffusion length before QD cap- cap-ture for I b = 3 nA

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